South Park: The Fractured But Whole
36 Achievements
25-30h
Master Classed
Equip powers from 4 different classes
28.0%
How to unlock the Master Classed achievement in South Park: The Fractured But Whole - Definitive Guide
The achievement will unlock after exiting your Phone.
If you would like a guide for this I will leave it below.
Straight after you escape Senior Center (mission "The Samaritan Agenda"), Cartman/The Coon will call you to return his house/C.A.F. base. There will be a cutscene in the base then you'll be able to pick your 4th class at the end. Straight after the cutscene, a character sheet update popup will occur. I Recommend you open your phone straight way before leaving the base and returning house for the next night mission "Nocturnal Submission". In the phone Powers app, change your powers so that you have one skill from each class equipped (you can change it back to what you want after the achievement pops).
Glitch : I didn't do this straight away and tried doing it later, after Timmy/Doctor Timothy unlocks all the classes for you. Tried heaps of different combinations, and after different mission completions, exited game, logged out/in, and it was the only achievement I had left after a potential perfect/single 22hr play through. So luckily I had saved 3-5hr intervals, so I used my 3hr save point at the ~6hr mark (3 more hours), I did the above straight away and got it. You have been warned.
You'll unlock three extra classes during the story, and after it is over you'll have access to all ten of them. You have four power slots available during battle (three normal and one super), and to unlock this achievement you need to equip a power from four different classes in those four slots. This can be done from the Powers app on your phone.
The earliest you will be able to do this one is during Day 3 after Cartman gives you access to a 4th class. After you have 4 different classes attached to your character, open up your phone and choose the powers app. Now you will want to assign one skill from each of the 4 classes to one of your power slots. Once you have a power in each slot from different classes, the trophy will pop.